Factory build sheet
2021 GMC Sierra Fleet/Base
Build 1GD59LE7-M · 6.6L 8cyl · Four-wheel drive · Incomplete - Chassis CAB (Double CAB)
VIN positions 1 through 8 read 1GD59LE7 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GD59LE7 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 26 of them.
- Decoded Jul 7, 2026
- 26 known VINs
Factory specification
As filed by GMC with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 6.6 L
- Cylinders
- 8
- Engine model
- L8T - SIDI, VVT, CAST IRON
- Fuel type
- Gasoline
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Incomplete - Chassis Cab (Double Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- 2500
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 3
- GVWR
- 10,001–14,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1GD | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | 59LE7 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
26 vehicles carry this build
Every VIN we have decoded to 1GD59LE7-M shares the specification above.
- 26 Known VINs
- 1GD59LE7 3MF202297
- 1GD59LE7 0MF214469
- 1GD59LE7 0MF221650
- 1GD59LE7 4MF292480
- 1GD59LE7 6MF107412
- 1GD59LE7 1MF170157
- 1GD59LE7 5MF239352
- 1GD59LE7 2MF172841
- 1GD59LE7 5MF240792
- 1GD59LE7 1MF172894
- 1GD59LE7 1MF239428
- 1GD59LE7 2MF240006
- 1GD59LE7 0MF192912
- 1GD59LE7 5MF270276
- 1GD59LE7 2MF214702
- 1GD59LE7 9MF239595
- 1GD59LE7 XMF242554
- 1GD59LE7 7MF222231
- 1GD59LE7 3MF170144
- 1GD59LE7 2MF266461
- 1GD59LE7 2MF221598
- 1GD59LE7 8MF180023
- 1GD59LE7 6MF221586
- 1GD59LE7 6MF200592
- 1GD59LE7 6MF213570
- 1GD59LE7 0MF239033
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 26 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.